I have owned 2. I do not own one anymore. I would not use one for HD, period. It is not reliable enough, and parts do break. I had a rat-tail break, the action bar guide break, and numerous jams even when clean. I do not like the 11-87. I have an 1100 from the early 70's that is dead reliable, but I also have had parts breakages with it over the years.
I put over 5000 rounds through each of the 11-87's before I gave up on them, the 1100 has just over that, and one breakage.
If you talk to the serious competitive 1100 or 11-87 shooter they ALL carry some spare parts, enough to enable them to finish anyway. Not a terrible gun for the money, but no way I would stake my life on one.